01The sequence
The everyday version of this shape: the way men often sit on the train — one ankle crossed over the opposite knee, that knee dropped out to the side. Not knee-over-knee like an ordinary crossed-leg sit. Ankle over knee, and the knee falls open.
Press play, or step through frame by frame.
Sitting
Sitting tall on the edge of the bed, both feet flat on the floor, hands resting on the bed either side of her hips.
The frame that is the movement
Everything happens in frame 3. The knee swings outward while the foot travels inward — the thigh bone rotating outward in the hip socket. Frames 2 and 4 are just getting into and out of it. If a take only gets the leg crossed without that outward swing, it has filmed a woman crossing her legs.
02The one thing that decides it
Where the raised knee ends up. It should point sideways, level with the hip or lower. A knee pointing at the ceiling means she has crossed her legs and nothing is being stretched — and from the front the two look similar enough that it will pass unnoticed on set.
Three ways it goes wrong
Pressing the knee down with a hand. Forces the rotation from the wrong end and strains the inside of the knee. It falls open under its own weight or not at all.
The foot set too far back, dangling behind the far knee instead of the ankle resting on the thigh. It slides straight off.
Rounding the back to reach further. That stretches the lumbar spine, not the hip — and in the first hour after waking it is the one direction the morning rule rules out.
03Camera — front, not profile
This one breaks the rule set on clip 01. Rock your hips is a side-on movement — shot from the front it is invisible. Open the hip is the opposite. The "4" only reads from the front: in true profile the crossed shin points at the lens, foreshortened to almost nothing, and the knee swings away out of sight.
Shoot it front-on, or rotated no more than about twenty degrees, from roughly knee height so the raised knee's height against the hip is readable. That is the measurement the whole clip exists to show.
| Movement | Plane | Camera |
|---|---|---|
| Rock your hips | Sagittal — forward and back | Side profile, ~20° toward camera |
| Turn and look | Transverse — rotation | Front or high three-quarter |
| Open the hip | Frontal + rotation | Front-on, knee height |
Practically: this clip needs its own start frame, and the bedroom plate has to work from a camera position the existing one does not cover. It cannot reuse clip 01's frame.
04The gentler version
The published draft says cross at the ankles instead. That gives almost nothing — the hip barely rotates. The better regression keeps the joint action and removes the load:
- Foot stays on the floor. Slide the heel out to the side, away from the other foot, and let that knee fall open. Same outward rotation at the hip, nothing crossed, nothing resting on the knee.
- Or set the ankle lower — on the shin rather than above the knee. Less rotation demanded, and the leg is easier to lift into place.
Morning version differs from the session version
In the sessions she adds a forward tip from the hip crease, back flat, to deepen it. In the morning she does not. The fold is hip flexion that becomes spinal flexion the moment form slips, which collides with the no-end-range-flexion rule in the first hour. For a deconditioned hip, crossing the leg and sitting tall is already a stretch.
05Where she feels it
Deep in the buttock of the raised leg, and along the outside of that hip. That is the piriformis and the deep external rotators — the range that goes first from years of chair-sitting, and the one you need to get out of a car, put socks on, or push up off the floor.
Not the front of the thigh. Not the low back.
- Any pain in the knee — stop. That is the wrong movement for her today; go to the gentler version.
- Sharp pain anywhere, as opposed to a stretch — stop, do not work through it.
- Worse the next morning than the evening after — drop to the gentler version.